Diamond Non Return Valves
Your Diamond Valve is fully maintainable – for Spares Kit information simply download our Maintenance Instructions
The DPL hygienic Diamond Non-Return Valve is designed to prevent back-flow of product in the pipework system.
The valve is constructed to the highest specification, thus ensuring optimum levels of hygiene and cleanliness by nature of it’s design.
Stainless Steel product contact components are manufactured from 316 and 316L. Seals and elastomers carry FDA approval. All valve component parts are designed to enable thorough in-line cleaning, even in the most challenging of applications.
With options of surface finish, seal material and fitting type, the valve is suited to many industry sectors. These sectors include Food and Beverage, Pharmaceutical, Biomedical and Chemical.
Please call us to further discuss your requirements. We are confident that we have a valve designed to suit your application.
Weight (kg) includes clamp ferrules, dimensions in mm
ATEX approved version available for use in potentially explosive atmospheres.
Group 2, Category 2, Gas and dust compliant
- ATEX approval for use in hazardous areas. (Please see information below)
- Fully machined valve components offering excellent corrosion resistance and no porosity.
- Aseptic design ensures wide acceptance in world-wide pharmaceutical, food and beverage industries including biomedical applications e.g. WFI
- Clamp body design ensures minimal downtime when sterilising / dismantling.
- Wide selection of seal material and end fittings available, thus ensuring compatibility with your system.
| Size | 0.5” | 0.75” | 1” | 1.5” | 2.0” | 2.5” | 3” | 4” |
| L1 Weld | 75 | 75 | 60 | 75 | 75 | 75 | 75 | 119 |
| L2 Clamp | 87 | 87 | 102 | 117 | 117 | 117 | 117 | 161 |
| L2 Male 1DF/RJT | NA | NA | 102 | 117 | 117 | 117 | 117 | 161 RJT 179 IDF |
| Diameter | 63 | 63 | 63 | 93 | 107 | 133 | 145 | 185 |
| Weight | 0.57 | 0.55 | 0.65 | 1.10 | 1.30 | 1.85 | 2.15 | 4.85 |
Technical Data
| Initial Opening Pressure: | 0.5 – 3psi |
| Fully Open Pressure: | 1 – 4 psi |
| Max Operating Pressure: | 150 psi (10 Bar) |
| Seal Material Options: | EPDM (standard), Nitrile, Silicone, Viton, FEP/PTFE |
| End Connection Options: | Clamp, RJT, IDF, ILC, DIN, SMS, Flange, Butt Weld |
| Internal Surface Finish: | 0.8um (standard) 0.5um and/or Electro-Polish. |
| Certification: | EN10204 3.1, ATEX, P.E.D 97/23/EC(SEP)
|
Working temperatures dependent upon choice of seal material, please consult DPL if in doubt
THE FINER DETAILS...
The DPL hygienic Diamond Non-Return Valve is designed to prevent back-flow of product in the pipework system.
The valve is constructed to the highest specification, thus ensuring optimum levels of hygiene and cleanliness by nature of it’s design.
Stainless Steel product contact components are manufactured from 316 and 316L. Seals and elastomers carry FDA approval. All valve component parts are designed to enable thorough in-line cleaning, even in the most challenging of applications.
With options of surface finish, seal material and fitting type, the valve is suited to many industry sectors. These sectors include Food and Beverage, Pharmaceutical, Biomedical and Chemical.
Please call us to further discuss your requirements. We are confident that we have a valve designed to suit your application.
Weight (kg) includes clamp ferrules, dimensions in mm
ATEX approved version available for use in potentially explosive atmospheres.
Group 2, Category 2, Gas and dust compliant
Download SFL Catalogue
We are proud to be a family-owned and operated business and the only UK manufacturer of BPE compliant fittings. SFL also stocks and distributes the full range of accredited ASME BPE tube and fittings, in addition to providing a full bespoke fabrication service.
Certification
Stainless Fittings (SFL) and Dairy Pipe Lines (DPL) are manufacturers of a wide range of stainless steel fittings, valves and bespoke fabricated units for the Bio-Processing, Pharmaceutical, Food, and Drink industries. The companies are regularly assessed to the ISO 9001:2015 Quality Management standard.
As part of our ongoing commitment to quality, the company has invested in systems that enable the traceability of materials used in both standard and fabricated products. These systems provide for the recording and reporting of quality and inspection data from various points on the manufacturing cycle.
Products meeting the ASME Bio Processing Equipment standard (BPE), will always be accompanied by full material certificates either with the goods or by email, or both if required. Where needed, SFL will provide a full quality dossier to cover project work.
The following process certificates can be made readily available when specified with the enquiry:
- Welding Certificates
- Welder approvals and weld procedures for each weld type and size of material.
- A weld plan and weld log for each item including any weld filler rod if used.
- CD Video files of each internal weld by its ID and part number immediately after welding.
- Welding machine calibration certificates.
- Orbital weld machine setting parameters and / or pre-weld coupons.
Surface Finish Certificates
A surface finish print-out for each item. A cleaning procedure document. A passivation certificate or electro polish certificate as required.
Functional Test Certificates
We will supply a pressure test certificate and pressure gauge calibration certificate to help with your obligations under the Pressure Equipment Directive. Additionally a dye penetrant test certificate or radiographic image and report can be supplied.
Declaration Documentation for EC Directives
Our valves meet the Pressure Equipment Directive (PED) and in some cases the Machinery Safety Directive (for powered valves). Selected valves are manufactured to comply with the ATmospheric EXplosive directive (ATEX). A safety declaration will be supplied in accordance with these directives.
Additionally, DPL offer a Certificate of Conformance for all products supplied. Certificates depicting seal type, FDA schedule number and operational pressure test are also available for all valves.
Quality
Stainless Fittings (SFL) and Dairy Pipe Lines (DPL) are manufacturers of a range of stainless steel fittings, valves and bespoke fabricated units for the bio-processing, pharmaceutical and food industries. The companies are regularly assessed to the ISO 9001:2015 Quality Management standard.
The products provided by the company meet the stringent statutory and regulatory requirements demanded by the marketplace. Inspections and product tests are carried out at regular stages of manufacture allowing comprehensive quality records to be maintained. These records can then be used for analysis as part of our commitment to ongoing process and product improvements. As part of this process, bi-monthly reviews are in place to ensure the quality system continues to support our business objectives.
With the processes of the Quality Management System defined and implemented, one major role of the management team is to adapt these processes to meet changing requirements in the industry and to enhance the business wherever this results in a benefit to our customers.
Our initial contact with our customers is normally through the Sales team. Here your precise requirements are assessed and stock availability discussed with you in order to meet your needs. Where you require us to make use of our fabrication facility, we take the time to understand your exact requirements even further.
After being sure that your sales contact has a clear understanding of your requirements, we conduct a Contract Review Meeting to ensure that the entire team responsible for manufacturing your order are all clear on what is needed.
We will contact you where we need further information or where we need specific points being clarified. All agreements are documented so you can be sure we have your requirements on board.
Material traceability is of prime importance to us, and therefore our internal bespoke systems and material identification allows us to trace material back to its origin.
SFL and DPL offer a wide range of certification options to include Certificates of Conformance, Original Material Certificates, EP or Passivation Certs, Weld maps, Qualifications and Procedures to name a few. Just discuss your requirements with us – our Mission is your Peace of Mind.
Click one of these links to view or download our EU Directive Statements for:
THE FINER DETAILS...
The DPL hygienic Diamond Non-Return Valve is designed to prevent back-flow of product in the pipework system.
The valve is constructed to the highest specification, thus ensuring optimum levels of hygiene and cleanliness by nature of it’s design.
Stainless Steel product contact components are manufactured from 316 and 316L. Seals and elastomers carry FDA approval. All valve component parts are designed to enable thorough in-line cleaning, even in the most challenging of applications.
With options of surface finish, seal material and fitting type, the valve is suited to many industry sectors. These sectors include Food and Beverage, Pharmaceutical, Biomedical and Chemical.
Please call us to further discuss your requirements. We are confident that we have a valve designed to suit your application.
Weight (kg) includes clamp ferrules, dimensions in mm
ATEX approved version available for use in potentially explosive atmospheres.
Group 2, Category 2, Gas and dust compliant
Download DPL Catalogue
Our mission at DPL is simple but profound: to solve your challenges. We’re committed to being more than just a supplier; we’re your partners in progress. With our expertise, extensive product range, and dedication to your success, we’re ready to tackle your toughest process problems and help you achieve your goals.
Certification
Certification for DPL Products
From the vast array of published standards there are a number that are key to each industry. The accepted way of confirming that the standard has been complied with is for the manufacturer or service provider to issue a form of certificate with the goods or service.
There are many types of certificate but typically they can be categorised as Certificates of compliance, Test certificates, Inspection certificates or reports and Certificates of acquired skill or attainment.
DPL is an assessed company to the ISO 9001:2015 Quality Assurance standard and certifies that its products meet the relevant standards the product was designed for and also where modifications are made to suit a specific purpose. We provide a Certificate of Conformance with each order dispatched. Our seal and gasket components are food contact safe and we provide certification for these that states the relevant FDA schedule number for the material.
A Valve Test Certificate is available for all DPL supplied valves. This will supply information on the materials used, the seal material and seal standards, the method of test and the test pressures, and the internal surface finish. Component Material certificates for the product wetted surfaces of the valve are also available with this certificate.
EU safety law
A statement of compliance is normally a legal requirement evoked by a European Directive. DPL issue these with every valve and actuator in line with the requirements of the particular commodity type along with our recommended valve installation procedures.
Some of the legislation affecting DPL products includes the Pressure Equipment Directive (PED), designed for pressure bearing products safety and the Machinery Directive that requires the design of the machinery is safe to operate and presents no hazard in operation.
DPL produces valves that comply with the electrical bias ATEX directive, for safety of operation in potentially explosive atmospheres which also seeks to prevent ignition through static discharge on non electrical products.
There are many other specialist certificates that have not been covered above. If you require a particular approval certificate for the components we can supply for your installation please enquire at the time of order with your DPL Sales contact.
Quality
Stainless Fittings (SFL) and Dairy Pipe Lines (DPL) are manufacturers of a range of stainless steel fittings, valves and bespoke fabricated units for the bio-processing, pharmaceutical and food industries. The companies are regularly assessed to the ISO 9001:2015 Quality Management standard.
The products provided by the company meet the stringent statutory and regulatory requirements demanded by the marketplace. Inspections and product tests are carried out at regular stages of manufacture allowing comprehensive quality records to be maintained. These records can then be used for analysis as part of our commitment to ongoing process and product improvements. As part of this process, bi-monthly reviews are in place to ensure the quality system continues to support our business objectives.
With the processes of the Quality Management System defined and implemented, one major role of the management team is to adapt these processes to meet changing requirements in the industry and to enhance the business wherever this results in a benefit to our customers.
Our initial contact with our customers is normally through the Sales team. Here your precise requirements are assessed and stock availability discussed with you in order to meet your needs. Where you require us to make use of our fabrication facility, we take the time to understand your exact requirements even further.
After being sure that your sales contact has a clear understanding of your requirements, we conduct a Contract Review Meeting to ensure that the entire team responsible for manufacturing your order are all clear on what is needed.
We will contact you where we need further information or where we need specific points being clarified. All agreements are documented so you can be sure we have your requirements on board.
Material traceability is of prime importance to us, and therefore our internal bespoke systems and material identification allows us to trace material back to its origin.
SFL and DPL offer a wide range of certification options to include Certificates of Conformance, Original Material Certificates, EP or Passivation Certs, Weld maps, Qualifications and Procedures to name a few. Just discuss your requirements with us – our Mission is your Peace of Mind.
Click one of these links to view or download our EU Directive Statements for:
